Well-drilling machine



y 1929. J. A. SHOWALTER WELL DRILLING MACHINE Filed April 14, 1928 2Sheets-Sheet l Attorney July 2, 1929. J. A. SHOWALTER WELL DRILLINGMACHINE Filed April 14, 1928 2 Sheets-Sheet 2 I Patented July 2, 1929.

' UNITED STATES JEREMrAn A. SHQWALTER, or SAVANNAH, GEORGIA.

- Application filed April 14,

My invention relates to improvements in cable well drilling machines inwhich the borings are removed from the well duringthe progress of thework and has for a principal object to provide a new and novel means forremoving the borings without drawing the tools from the well so that thedrilling may proceed continuously and without interruption. v

A further object of the invention is to provide a hydraulicdrillingappa'ratus having means connected therewith for forcing a supplyof water through the drilling tool, said drilling tool being furtheradapted for use in removing water from the well, when fdesired, duringthe drilling operation.

A still further object is to provide a drilling machine of thischaracter ofsimple and practical construction, which is strong anddurable efficient and reliable in performance,.relatively inexpensive tomanufacture, and maintain in operation and otherwise well adapted to thepurposes for which the same is intended.

Other objects and advantages reside in the special construction andcombination of the various elements comprising the invention, referencebeing had to the accompanying,

drawings forming a part hereof, wherein:

Figure 1.is a side elevational view of the apparatus,

Figure 2 is a top plan view with the borings removed,

Figure 3 is a fragmentary end elevational view of the hose drum, withparts shown in section showing the manner of feeding the water to thehose through the shaft of'the drum,

Figure 4 is an elevational View of the drilling tool in assembledposition;

' Figure 5 is a transverse sectional vlew therethrough takensubstantially along a line 5'5 of Figure 4, and u Figure 6 is alongitudinal sectional view through one of the connections for the tooland illustrating the position of the jetting valve arranged therein andused in connection with the tool when removing water from the well.

Referring now to the drafwings in detail, the invention comprises awheeled truck comprising a body or platform 5 mounted on wheels 6, oneend of the platform providing a support for a vertically extendingderrick 7 having a brace 8 connected at its upper end and extending topost 9 carried at the opposite, v

WELL-DRILLING MACHINE.

Serial No. 270,001.

platform serving to support'the in vertically extended position.

nected with agear wheel 12 journaled for rotation on the frame orplatform 5. The gear wheel 12 is operated through a PlIllOIl gear 13mounted at one end of a trans- Versely disposed shaft 14, journaled forrotation on the body and having its opposite end operated through a belt15 driven through an engine or other suitable power plant 16 mountedtoward the rear end of the body.

The pinion gear 13 is also operatively connected with a gear 17 mountedon a shaft 18 also carrying a drum 19 and about which one end of a cable20 is wound, said cable extending over pulley wheels 21 mounted on thewalking beam 10 and extending over a pulley wheel 22 mounted at theupper end of the derrick with'the opposite end of the cable attached toa rope socket member 23 forming the upper section of the drilling tool.

A belt 24 is also driven from the pinion gear shaft 14 for operating apure through a countershaft and belt 27 respectively. The counter shaft26 also provides a mounting for a gear wheel 28 operatively connectedwith ya gear 29 formed at one end of a hose drum 30, said drum be- 'ingournaled for'rotation upon the body '5,'

one end of the drum having a hollow shaft 31 extending therefrom forminga connection at one end with a hose 32 wound about the drum. Within theouter end of the hol- 25 drive 26 and low shaft31 extends the end of apipe 33 forming a connection with the pump 25. A.

.packing nut 34 is fitted between the end of the pipe 33 and the end ofthe shaft 31m form a liquid tight connection between such parts. I

The hose 32 extends from the drum about pulley wheels 33 mounted .on thewalking beam and up over a pulley wheel 34 mounted at the upper end ofthe derrick with the end of the hose forming a connection with a waterpassage 35 extending longitudinally through the body of the rope socket23. i

The rope socket 23 constitutes the upper section of the drilling tool,which also includes a double jar section indicated at 36,

a drill stem 37 and drill bit 38 carried at the lower end of the tool.

The lower end of eachof the drilling tool sections is formed into aninternally threaded socket member 39 with the upper end'of the adjacentsection formed into an externally threaded plug 40 thereby enabling athreaded connection to be made between the sections. Each of thesections are provided with a bore 41 extending therethrough forming apassageway for the water fed from the bore extending through the plug 40and tool sections disposed immediately therebeneath. The upper portionof the valve 43 is provided with a plurality of fingers 44 adapted toengage'a shoulder 45 formed at the upper portion of the valve chamber toprevent the valve from closing communication with the bore 41 disposedabove the valve and thus .enable fluid to freely pass upwardlythroughthe bore of the drilling tool.

I The lower end of the drill bit 38 is provided with a plurality ofdischarge passages 46 communicating with the bore 41 formed in thebit,said discharge passages having their outlets through the extreme lowerend of the bit.

. The jar section 36 of the drilling tool is formed of a pairof-longitudinally slidable sections with their adjacent ends formed intolinks 47 inter-connected with each other. The links permit of a limitedsliding movement between the sections of the jar and at the same timeprevent the separation of the sections so as to maintain the sectionsofthe drilling tool for operation as'a unit. The upper and lower sectionsof the jar are connected by a pipe section48 having its respective endstelescopically inserted within the bore 41 of the jar section andprovided with a packing nut 49 to form a liquid tight connection therebetween. The pipe section 48 also has a ball I and socket coupling 51interposed therein to permit of a swivel movement between the ends ofthe pipe 48 to compensate for a similar movement which may occur betweenthe sections of the jar by reason of sway occurring through its linkconnection.

The pipe 33'communicating between the pump-25 and hose 32 is fitted witha discharge pipe 50 controlled by a valve 51 and a shut off valve 52 isalso interposed in the pipe 33 between said valve 51 and the pump.

In the operation of the apparatus under normal conditions, the jettingvalve 43 is removed from the drilling tool, the tool being operatedthrough the reciprocating movement of the walking beam 10. At the sametime water is forced through the tool by means of the pump 25 tofacilitate the drilling operation.

Should an excessive supply of water he forced into the well or aninexhaustible supply be encountered during the drilling operation, thedrilling tool is withdrawn and the jetting valve 43 interposed betweentwo or more of the sections thereof in a manner as illustrated in Figure6 of the drawing and the paifis again connected and lowered in the weThe cut off valve 52 leading to the pump is closed and the valve 51opened, the supply of water in the well during the continued operationof the apparatus serving to force the borings and cuttings of the bitupwardly through the drilling tool and out through the discharge pipe50.

It is obvious that the invention is susceptible of various changes andmodifications, without departing from the spirit or scope of theinvention or sacrificing any of its advantages, and I accordingly claimall such forms of the device to which I am entitled.

Having thus described my invention, what I claim as new is:

In a drilling apparatus, a sectional hollow drilling tool including arope socket at one end and a drill bit at its opposite end, a jarsection and a drilling stem section interposed between the ends of thetool, means for detachably connecting said sections, a jetting valveremovably positioned at the connected ends of said sections, said drillbit having discharge ports formed therein and said rope socket having ahose connection formed thereon, a hose extending from said connection, ahose drum having a hollow shaft at one end communicating with the hose,a feed pipe for the shaft, fluid pressure means for the pipe, a pair ofcut off valves interposed in said pipe, one of said valves controllingcommunication between the hose and the fluid pressure means and saidother valve controlling communication with a discharge pipe for thehose, cable supporting means for the drilling tool and provided with adrum for reeling and unreeling the same, reciprocating operating meansfor the drilling tool and drive means for each of said drums and thereciprocating operatmg means.

In testimony whereof I afilx my signature.

' JEREMIAH A. SHOWALTER.

